已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,
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已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?:
已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,
已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,
已知x+4y-3z=0,4x-5y+2z=0,则x:y:z=?::,
已知x+4y-3z=0,4x-5y+2z=0
则 x=3z-4y
2z=3y
x=1/2y
x=2/3z
x:y:z=1:2:1.5
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